# CVE-2026-56580: HCL MyCloud use of unmaintained components in IIS Server

Source: https://junglewise.ai/threats/cve-2026-56580-hcl-mycloud-use-of-unmaintained-components-in-iis-server  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-21. Updated: 2026-07-21  
License: CC BY 4.0 with a link back

CVE-2026-56580 · Severity: low · CVSS 2.2 · Published 2026-07-21

HCL MyCloud is affected by a security vulnerability due to the use of an outdated or unmaintained version of the Microsoft IIS web server. This could allow a highly privileged attacker to exploit known weaknesses in the underlying server software to potentially access sensitive information. Because the attack requires high-level administrative access and specific network conditions, the overall risk to the organization is considered low.

Technologies: [HCL Software MyCloud](https://junglewise.ai/threats/technologies/mycloud). Vendors: [HCL Software](https://junglewise.ai/threats/vendors/hcl-software).

## Quick answers

**Is CVE-2026-56580 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-56580 being exploited in the wild.

**How severe is CVE-2026-56580?** Low severity, with a CVSS score of 2.2, published 21 July 2026.

**Which products and versions are affected?** HCL Software MyCloud 10.8.2.

**Is there a fix for CVE-2026-56580?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-56580 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-56580?** Check whether you run HCL Software MyCloud at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

HCL MyCloud version 10.8.2 utilizes a version of Microsoft IIS Server that contains known vulnerabilities or is no longer maintained (CWE-1104). An attacker with high privileges (PR:H) could exploit these underlying weaknesses over a network, though the attack complexity is high (AC:H). Successful exploitation could lead to a limited loss of confidentiality. The vulnerability was identified by HCL Software, and users are encouraged to review the associated security bulletin for remediation steps.

## Affected products

- HCL Software MyCloud 10.8.2

## Timeline

- 2026-07-21: advisory: Initial disclosure by HCL Software and NVD publication.

## References

- [https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0132381](https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0132381)

## Related threats

- [HCL MyCloud concurrent login vulnerability](https://junglewise.ai/threats/cve-2026-56583-hcl-mycloud-concurrent-login-vulnerability)
- [HCL MyCloud SSL/TLS LUCKY13 padding oracle vulnerability](https://junglewise.ai/threats/cve-2026-56582-hcl-mycloud-ssl-tls-lucky13-padding-oracle-vulnerability)
- [HCL MyCloud missing cookie path attribute](https://junglewise.ai/threats/cve-2026-56581-hcl-mycloud-missing-cookie-path-attribute)
- [HCL MyCloud sensitive information disclosure in HTTP response](https://junglewise.ai/threats/cve-2026-56579-hcl-mycloud-sensitive-information-disclosure-in-http-response)
- [HCL MyCloud server version disclosure](https://junglewise.ai/threats/cve-2026-56578-hcl-mycloud-server-version-disclosure)